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Elodia [21]
3 years ago
8

4x2 - 5 + x + 5x2 + 3x - 9

Mathematics
2 answers:
Mnenie [13.5K]3 years ago
4 0

Answer:

9x2+4x−14

Step-by-step explanation:

brilliants [131]3 years ago
4 0
Expression simplified:

4x + 4

Hope it helps
Have a great day :D

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Which postulate or theorem can be used to
sveticcg [70]

Answer:

AA Similarity Postulate

Step-by-step explanation:

we know that

If two figures are similar, then the ratio of its corresponding sides is proportional and its corresponding angles are congruent

step 1

Verify the proportion of the corresponding sides

\frac{PS}{PQ}=\frac{PT}{PR}

substitute

\frac{45}{20}=\frac{36}{16}

2.25=2.25 ----> is true

Corresponding sides are proportional

Triangle PQR is similar to Triangle PST

That means

Corresponding angles must be congruent

side QR is parallel side ST

and

m\angle PQR=m\angle PST ----> by corresponding angles

m\angle PRQ=m\angle PTS --> by corresponding angles

so

PQR is similar to PST by AA Similarity Postulate

4 0
3 years ago
A plant 3 inches tall grows an average of 0.5 inches each month. Which equation models the heigh h after x months
anzhelika [568]

Answer:H = 3 + 0.5x

Step-by-step explanation:

This would be H = 3 + 0.5x

5 0
3 years ago
(6a −? )5a =? a2 − 35a
Karolina [17]
Answer:
5a(6a-7) = 30a² - 35a

Explanation:
Before we begin, remember the following:
a(b+c) = ab + bc

Now for the given:
Assume that the first question mark is x and that the second question mark is y.

The expression now becomes:
(6a-x) * 5a = ya² - 35a
Distribute the 5a over the bracket and equate it with the right-hand side as follows:
5a(6a) - 5a(x) = ya² - 35a
30a² - 5ax = ya² - 35a

By comparison:
30a² = ya² ..............> This means that y = 30
-5ax = -35a
-5x = -35
5x = 35
x = 35/5
x = 7

Based on the above, the expression is:
5a * (6a-7) = 30a² - 35a

Hope this helps :)
7 0
3 years ago
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Step-by-step explanation:

3

1

6

100

8

They are the answers

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